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The Logitech M720 Triathlon is kind of a secret. It is a Bluetooth mouse that carries most of the features people love about the MX Master 3S, but it comes in a slightly smaller package and a much smaller price. I have been using it across several machines, and I keep coming back to it. In this review I want to walk through everything this mouse can do and why I think it is a genuinely great option for both Windows and Mac users.
A $40 Bluetooth mouse with easy-switch, deep customization, and 24-month battery life. It is the value pick most people overlook.
- Comfortable, ergonomic contour that does not tire your wrist
- Easy-Switch button pairs up to three devices
- Free-spin and ratchet scroll wheel with tilt for side scrolling
- Up to 24 months of battery life
- Rock-solid Bluetooth on every computer I tried
- Only $40
- Only available in black
- Customization needs the Logi Options Plus app, so no button remapping on iPad
- Uses the older USB Unifying receiver instead of USB-C recharging
- Intro: Who This Is For
- Comfort and the Shape in Your Hand
- The Customizable Buttons and Easy-Switch
- The Secret Button and Mac Gestures
- The Scroll Wheel: Free Spin and Ratchet
- Customizing With Logi Options Plus
- Battery Life and the Unifying Receiver
- How It Stacks Up Against the MX Master 3S
- Price and Value
- The One Real Downside
Intro: Who This Is For
The Triathlon is for anyone who wants a solid Bluetooth mouse for Windows or Mac. You get great Bluetooth connectivity, tons of customization, and enough ergonomic comfort that it is not going to hurt your wrist during a long day. Your thumb sits naturally on the side of it, and I really like the materials Logitech used here. If you want most of what the MX Master 3S offers without paying MX Master money, this is the mouse to look at.
Comfort and the Shape in Your Hand
The first thing you notice when you pick up the M720 is how comfortable it is. It has a nice contour, and it is elevated slightly at the back, so your palm rests on it instead of floating over it. That shape is what keeps it from tiring out your wrist. It is a touch smaller than the MX Master 3S, which some people will prefer and some will not. I find it almost as comfortable as the MX Master, though the MX is a little bigger and I found that slightly easier to hold onto over long sessions. For most hands, the Triathlon lands in a good spot.
The Customizable Buttons and Easy-Switch
On the side and top of the mouse you get several customizable buttons. On the left side there is a forward and back button, which is exactly where your thumb expects them. There is also the Easy-Switch button, and this is the feature I use the most. It lets you pair the mouse with up to three Bluetooth devices and swap between them right from the side of the mouse. Moving from one machine to the next is quick and painless.
If you want to put it in pairing mode, you press and hold that button and the light starts to blink to show Bluetooth pairing is active. On the top you have your standard left click and right click. Every one of these buttons can be remapped, which I will get to in a moment.
The Secret Button and Mac Gestures
Near the bottom of the side there is a secret button that unlocks a set of hidden features. On macOS you can turn this into a gesture button. You press it and move the mouse in different directions, and it will do things like change workspaces, reveal Mission Control, or jump to the desktop. It is a small addition, but it adds a lot of control once you set it up the way you like. You configure all of this in the Logi Options Plus app.
The Scroll Wheel: Free Spin and Ratchet
The scroll wheel is versatile. It has tilt, so you can side scroll by pushing the wheel left or right. Below the wheel there is a button that switches between free-spinning and ratcheting scroll. Free spin lets you fly down a long page, and the ratchet gives you slower, more precise, line-by-line scrolling. You can also press the scroll wheel itself as a click, and that press is another action you can customize.
The tilt is not quite as nice as the dedicated side scrolling on the MX Master 3S, but you can tune it in the app. You can change the sensitivity and the amount it actually scrolls, which helps a lot. This has worked really well for me in Final Cut Pro when I am editing video.
Customizing With Logi Options Plus
All of the customization runs through the Logi Options Plus app. That is where you remap the buttons, set up the Mac gestures, and dial in the scroll behavior. There is one caveat to keep in mind: you can only change what the buttons do if you are on Windows or Mac. The mouse works really well on iPadOS, but you will not get any customization there. So if the app matters to your workflow, plan on using it from a desktop.
Battery Life and the Unifying Receiver
On the bottom of the mouse you have the off and on switch. You can also pop it open to reveal the battery, and there is a USB Unifying receiver tucked inside. That is the older receiver from Logitech, not the newer Logi Bolt, but it still works fine. The headline number is battery life: you get up to 24 months out of the M720. That is the kind of runtime where you basically forget the mouse has a battery at all.
How It Stacks Up Against the MX Master 3S
If you put the Triathlon next to the MX Master 3S, they look almost identical. The differences show up in the details. The MX Master is elevated more at the side, it has true dedicated side scrolling, and it charges over USB-C. The Triathlon leans on its tilt scroll and the replaceable battery in the Unifying receiver setup. The MX Master 3S is the more premium mouse, and it is a little bigger, which I found easier to grip. But the battery life on the Triathlon is so long that I do not think you are really going to miss USB-C recharging.
| M720 Triathlon | MX Master 3S | |
|---|---|---|
| Price | $40 | Premium tier, much more |
| Recharging | USB Unifying receiver, replaceable battery | USB-C rechargeable |
| Side scrolling | Tilt on the main scroll wheel | Dedicated thumb wheel |
| Size | Slightly smaller | Larger, more elevated |
| Battery life | Up to 24 months | Rechargeable |
Price and Value
The Triathlon comes in at just $40. For that money you get the Easy-Switch button, a full set of customizable buttons, and the reliability that comes with the Logitech name. Logitech has a great reputation, and getting this feature set at this price feels like a steal. When I add up the comfort, the battery life, and the multi-device switching, this is one of the better values in wireless mice right now.
The One Real Downside
The biggest con is simple: it is only available in black. If your setup is all light mode and white peripherals, there is no white version of this mouse to match it. The other things to keep in mind are the older Unifying receiver instead of USB-C, and the fact that customization only happens on Windows or Mac. None of those are dealbreakers for me, but they are worth knowing before you buy.
The Verdict
Overall I really recommend the M720 Triathlon. It is very comfortable, very ergonomic, and it just works. The Bluetooth connection was rock solid on every different computer I threw at it, the battery life is long enough to forget about, and the Easy-Switch button makes moving between machines effortless. At $40 it does most of what the MX Master 3S does for a fraction of the price. If you want a solid Bluetooth mouse for Windows or Mac that will not hurt your wrist, this is an easy one to recommend.
